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The characteristics and comorbidities of study population (n = 670)
| Variables | N | (%) | Mean ± SD |
|---|---|---|---|
| Age | 670 | (100.0) | 70.5 ± 14.0 |
| < 65 | 188 | (28.1) | |
| ≥ 65 | 482 | (71.9) | |
| Gender | |||
| Male | 343 | (51.2) | |
| Comorbidity | |||
| Coronary artery disease | 447 | (66.7) | |
| Congestive heart failure | 287 | (42.8) | |
| Hypertension | 529 | (79.0) | |
| Hyperlipidemia | 257 | (38.4) | |
| COPD | 112 | (16.7) | |
| Diabetes mellitus | 213 | (31.8) | |
| Chronic kidney disease | 57 | (8.5) | |
